Trolley-pole and stand therefor.



No. 717,583. "PATENVIBD JAN. s, 1903.

W. H. KILBOURN.-

TROLLEY POLE AND STAND THEREiEOR.

APPLICATION mum MAR. 13, 1902. I no n'onBL. 2 SHEETSSHEBT 1.

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nmnzsss. PATENTE'D JAN.6,1903.

W.H.KILBOURN.

TROLLE-Y POLE AND STAND THEREFOR.

APPLIOATION FILED MAR. 13, 1902.

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WIN? n ziliililmz v v Aliomey WASHINGTON H. KILBOURN, OF GREENFIELD,MASSACHUSETTS, ASSIGNOR TO THE STANLEY ELECTRIC MANUFACTURING COMPANY,OF PITTS- FIELD, MASSACHUSETTS, A CORPORATION OF NEW JERSEY.

TROLLEY-POLE AND SPECIFICATION forming part of Letters Patent No.717,583, dated January 6, 1903.

Application filed March 13, 1902.

To aZZ whom it may concern:

Be it known that I, WASHINGTON H. KIL- BOURN, a resident of Greenfield,in the county of Franklin and State of Massachusetts, have inventedcertain new and useful Improvements in Trolley-Poles and StandsTherefor; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin lo the art to which it appertains to make and use the same. 4

My invention relates to an improvement in trolley-poles andstandstherefor, the object of the invention being to provide an improved standwhich will project but a short distance above a car-top and so constructand mount the trolley-pole that it will catch and not be thrownviolently against cross-wires in the event of the harps escape from thetrolleywire.

A further object is to provide an improved trolley-pole which will beextremely light and elastic, yet strong and durable to withstand thenecessary strains thereon.

With these objects in view the invention consists in certain novelfeatures of construction and combinations and arrangements of parts, aswill be more fully hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view illustrating myimprovements. Fig. 2 is a front view. Fig. 3 is an end view. Fig. 4 isan enlarged view of the trolley pole, and Fig. 5 is a view in sectionillustrating the spring-tension mechanism. Fig. 6 is a view of amodification.

1 represents the top of a car, on which a plate 1 carrying the verticalpin 2, is secured and on which my improved stand is mounted to turn, andsaid stand comprises a hollow standard 3, having a thrust-bearing on pin2 and secured against removal by a thumbscrew 4, projected into anannular groove in the pin, and an oil-cup 5 is preferably pro- 5 videdat the top of standard 3 to lubricate the bearing. Parallel circularplates 6 are made integral with standard 3, and with one of said platesa horizontal cylinder? is made integral. This cylinder 7 is open at bothends and has mounted therein a journal 8, project- Serial No. 98,102.(No mcdell) ing through one plate 6 and having a crosshead 9 securedthereto or made integral, as preferred, and disposed between plates 6,and the other end of the journal 8 extends beyond the end of thecylinder, being closed bya cap 5 5 10, through Which'the journalprojects.

The trolley-pole consists of a spring-rod bent between its ends, asshown at 12, forming two approximately parallel rods 11 and 13, whichproject through openings in the crosshead 9 and the lower rod 13,secured in the cross-head by a bolt, as shown. A brace-rod 14 is alsosecured in said cross-head 9 and extends some distance between andapproximately parallel with rods 11 and 13 and is bent at its outer endinto a hook 15 to be bent around the lower rod 13 and make the lattercomparatively rigid. The upper rod 11 projects through cross-head 9 andhas screwed thereon a nut 16, the latter being sufficiently spaced fromthe cross-head to permit of movement of rod 11, on which and nearcross-head 9 a bar 17 is located, and is provided at each end with a'dog 18, adapted to engage a series of teeth on the plates 6 to catchthe trolleypole in the event of its escape from the trolley-wire, aswill be more fully hereinafter explained.

In cylinder 7 around journal 8 and secured to the journal at one end isa coiled spring 19 to give to the trolley-pole the proper springpressureand hold it in contact with the trolley-Wire, the other end of thisspring 19 being secured to cap 10. The cap has a springpressed lever a,pivoted betweenits ends and carrying at its free end a pin 1),projecting through a hole in the cap and adapted to spring into any-of aseries of holes in the cyl- I inder to lock the spring at any tension,and to facilitate the turning of the cap I provide a lug 0 near itsedge, and the operator inserts a bar between this lug and end of journaland can force the springs tight as desired' On plate 1 at one or bothedges I preferably provide a raised track d, against the 5 lower face ofwhich a roller 6, carried by an armfon standard 3, runs. This track may.be constructed in any desired manner, and it serves to relieve the pin 3of the great strains thereon, but will not interfere in the slightestwith the swinging of the trolleypole.

, On the outer end 12 of the pole a harp 20 is secured for engagementwith the trolleywire, and a rope or chain 21 is secured to this outerend of the pole to permit the movement of the pole at will.

The operation of my improvementsis as follows: When the harp 20 is inengagement with the trolley-wire, the tension of spring 19, pressing theharp thereagainst, will be sufficient to draw the rod 11 outward andhold the dogs 18 out of engagement with the teeth on plates 6; but whenresistance is removed from the poleas, for instance, when the harp jumpsfrom the wire and the pole is thrown forward by its spring 19-theelasticity of rod 11 will be sufficient to immediately move the dogsinto engagement with the teeth and hold the pole out of danger ofstriking cross-wires and the like, and when the conductor or otheroperator draws the pole by means of rope or chain 21 the dogs will bemoved out of engagement with the teeth and held out of such engagementuntil all downward resistance on the outer end of the pole is againremoved.

Instead of constructing the pole as above explained I might employ apole similar to those now in use, in which event a modifiedconstruction, such as shown in Fig. 6, would be used. In this form of myinvention the cross-head 22 is made approximately L shape and thejournalsecured thereto near the angle. To the short member of crosshead an arm23 is pi votally connected and is normally disposed parallel with themain portion of said head, and a bolt 24 is passed through the free endsof cross-head 22 and arm 23 and is headed at one end and has a nutscrewed on the other end to prevent the escape of the bolt. A coiledspring 25 is mounted on bolt 24 between the head thereof and cross-head22 and is of sufficient strength to overcome the weight of thetrolley-pole to compel dogs 26, carried by arm 23, to engage teeth onthe plates 6 when pressure is relieved from the free end of thetrolley-pole. When the pole is in engagement with the trolley-wire, thetension of the main spring will hold the dogs out of engagement with theteeth, and when the pole is being moved by the operator the pressurewill hold the dogs out of engagement; but when the pole is relieved ofall pressure, or, rather, resistance, spring 25 is strong enough toforce the dogs into engagement with the teeth and catch the pole beforeany damage is done by its being thrown forward by the main spring.

A great many other slight changes and alterations might be resorted toin the general form and arrangement of the several parts describedWithout departing from the spirit and scope of my invention, and hence Iwould have it understood that I do not limit myself to the'preciseconstruction set forth, but consider myself at liberty to make suchslight changes and alterations as fairly fall within the spirit andscope of my invention.

Having fully described my invention,.what I claim as new, and desire tosecure by Letters Patent, is

1. The combination with astand, a trolleypole pivotally attachedthereto, and a spring for throwing the pole forward, of a dog made rigidwith the pole and adapted to engage the stand and lock the pole againstforward movement when resistance to such forward movement has beenremoved, said dog being normally retained out of engagement with thestand by pressure applied to the pole.

2. The combination with a stand having teeth and a trolley-polepivotally attached to said stand, of a dog carried by and made rigidwith the pole for engaging the teeth on the stand and means for applyingspring tension to the pole when resistance is applied to the free endthereof, said spring tension acting to retain the dog on the pole out ofengagement with the teeth on the stand.

3. The combination with a stand having ratchet-teeth, of a flexible polepivotally attached to the stand, and carrying a contact device at itsfree end, and a dog rigid with the pole for cooperating with theratchetteeth, said dog being held out of engagement with theratchet-teeth by the bending of the pole when in use, and a spring forapplying pressure to the pole to press the contact device against atrolley-Wire.

4. The combination with a stand, of a pole pivotally connected with thestand and having a flexible member movable longitudinally in itsconnection with the stand, a contact device at the free end of the pole,a spring connected with the stand and pole for pressing the contactdevice on the latter against a trolley-wire, and a dog secured to theflexible longitudinally-movable member of the pole and adapted to engagethe stand when the contact device leaves the trolley-wire and theflexible member of the pole straightens and its lower end moveslongitudinally.

5. The combination with a pin and a hollow standard having athrust-bearing thereon, of a cylinder carried by the standard a journalin said cylinder, a spring to turn said journal in one direction, across-head on the journal, a pole carried by the cross-head, aspring-pressed dog on the pole, a series of teeth on the cylinder end tobe engaged by said dog when the end of the pole is relieved ofresistance.

6. The combination with a spring-pressed journal, of a cross-headthereon, a pole comprising a spring-rod bent between its ends and oneend secured in the cross-head and the other mounted to move in a holetherein, a toothed rack and a dog carried by the rod near itsloosely-mounted end to normally engage the teeth of the rack butreleased from such engagement when resistance is applied to the free endof the pole.

7. The combination with a spring-pressed IIO journal, of a cross-headthereon, a pole com,

prising a spring-rod bent between its ends and one end secured in thecross-head and the other end mounted to move in a hole in the cross-headabove the point of attachment of the other end, a nut on the upper rodto prevent its withdrawal from the head, a dog on this upper rod toengage a rigid toothed rack when resistance is not applied to the outerend of the pole, and a brace-rod secured in the cross-head and hookedaround the lower rod.

8. The combination with a vertical pin and a hollow standard having athrust-bearing thereon and a thumb-screw in the standard and projectinginto an annular groove in the pin, of parallel circular plates integralwith the standard, a horizontal cylinder integral with one of saidplates, a journal in said cylinder, a cross-head on the journal locatedbetween the plates, a pole comprising a rod bent between its ends intoan upper and lower rod, the latter rigidly secured to the cross-head andthe former mounted to slide in a hole therein, a nut screwed onto theupper rod to prevent its withdrawal from the cross-head, and dogscarried by the upper rod forced into engagement with teeth on the platesby the spring of the pole when resistance is not applied to the latter.

9. The combination with a vertical pin, of a hollow standard having athrust-bearing on said pin, a horizontal cylinder projecting laterallyfrom said standard, a cap on one end of said cylinder, a journal in saidcylinder, a spring encircling said journal in the cylinder, said springsecured at one end to the journal and at the other end to the cap, meansfor adjustahly securing said cap to the cylinder, a cross-head fixed toone end of the journal and a pole secured to the cross-head.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses. WASHINGTON H. KILBOURN.

W'itnesses:

T. A. LUCAS, LYMAN W. GRIsWoLD

